Upsetting machine



Aug. 2s, 1934. K F, w KEMPF 1,972,051

UPSETTING MACHINE l Filed Maron 28, 1932 Y 4 sheets-sheet 1 l{/vy' i t 40 if il ,el i? afi Isfif E v v "ummm-rl .l v f hl Q m ll A 47 :fz-f" 'l l Il {f6-iu n 1,15.. Je n* f4 f Il I'Je ig QZ- 1- Ill 1 i f 1 i3 75 J6 76 Aug. 28, 1934.

K, F. w. KEMPF UPSETTING MACHINE K a Y Aug. 28, 1934. K. F. w. KEMPF UPSETTING MACHINE Filed March 28. 1952 4 Sheets-Sheet 4 Patented Aug. 28, 1934 entree STATES A UPSETTING MACHINE Karl r. fw. Kempf, Buffalo, N. Y., assigner to Mcllaigfllatch, Inc., Buffalo, N. Y., a corporation of New York Application March 28, 1932, Serial No. v601,477 16 claims. (c1. ilo-11)V My invention relates to improvements in machines for upsetting rods to form enlargements or heads thereon, or what may be termed upsetting machines.

. 5. The primary objectof my invention is the provision of an upsetting machine for forming enlargements or heads on rods and the like and nishing the article to true andfexac'tlength without resorting to eXtra operations or to the use of more than a single heat.

Heretofore, When forming a head or enlargement on a bar it was invariably necessary to reheat the bar after the head or enlargement was preliminarily or even rudimentarily formed, and this resulted in increased costs of production and inaccuracies or variations in diameter of the head and length of the finished headed article. and considerable waste in material. Therefore, it has been found, where accuracy in the length, diameter, or form of the head or enlargement and in the length of the inished headed Aarticle is desired, that the article could be produced considerably cheaper by machining the same from material to desired size; machine-headed rods, f' screw bolts and the like being, however, considerably inferior in qualities.

A further object of my invention therefore is, to provide a headed article which shall include headed rods, bolts, or any other article formed of rod material having an end enlargement or a head thereon, under a new method of manufacture; and to provide new and novel means under which such method is practiced.

A still further object of my invention is to provide a heading machine which, is comparatively simple in construction, and which will, under one heat of a rod or har, form a head or'end enlargement on an article cf manufacture which is true in lengthY and diameter, and also in form; and also one which is true in overall length and perfeet in alinement. With these and other objects yin view to appear hereinafter, my invention consists in thenovel method of manufacturing headed articles and in the new and novel machine for practicingsuch method; also in the novel features of construction, and arrangement and combination of parts to be hereinafter described and more particularly pointed out in the subjoined claims.

In the drawings:

Fig. 1 is a top plan view of a portion of a machine showing my improved invention.

Fig. 2 is a vertical section taken on line 2 2,

' 5:, Fig. 1.

Fig. 3 is an end view vof the machine shown in Fig. 1, viewed from the right.

Fig. 4 is an enlarged transverse section taken on unev 4 4, Fig. 2.

Fig. 5 is anenlarged horizontal section taken 50, on line 5 5, Fig. 2.

Fig. 6 is an enlarged vertical transverse secy tion taken on line 6 6, Fig. 1, looking in the direction of the arrow crossing said line.

Fig. 7 is an enlarged vertical transverse section 55 taken on line 7 7, Fig. 1. Y

Fig. 8. is an enlarged horizontal section taken on line 8 8., Fig. 2, the ram being ,shown advanced with Ythe initial upsetting tool or -forming die advanced with the ram. '701 Fig. 9 is an enlarged horizontal section taken on line 9 9, Fig. 2, the'ram .being shown advanced with the secondary upsetting tool or forming-die advanced with the ram.

Fig. 10 is anenlarged horizontal section taken i5 on line 10 10, Fig. 2, showing the rudimentarily formed head or end enlargement on the rod in position to be finished.

Fig. 11 is a view similar to Fig. 10, showing the ram advanced and the nishing tool or die in position after completing the rudimentarily formed head unfinished form.

Figs. 12 and 13 are detached perspective views of the support or carrier for the rode-supporting member, viewed fromfront. and rear, respectively.

Figs. 14 and 15 are perspective views` of the rod-supportingzmember, viewed from front and rear, respectively. Y n

Fig. 16 is a detached perspective view-of the rod shearing element. d v

Fig. .1K7 is a detached perspective view ofthe rod squaringplunger or stud. f f l Fig. 18v i's a detached perspective View of the pivoted actuator for the rod squaring plunger or stud. Fig.r19 is a detached perspective view of one of the rod nicking or marking devices.

The machine may have any suitable framework provided with a longitudinallymovable ram and a transversely movable rod-clamping mem- 100 ber. A Y f 4 In theA drawings the reference numeral 20 designates the 'frame` of the machine, and 21 the ram movable rectilinearly inY a. guideway 22 arrangedin'the frame.A The ram is ,operated in 105 any suitable mannerY and by-any approvedmeans so as to reciprocate withinthe guidcway v22, and inthe representative form shown comprises ,three connected center members 23, 24 and 25 arranged in, contact-,one above the othen, anliedA by two 1.1.5

side members 26, 27, .the side members and the Superposed center members 23, 24 and 25 being connected together in any approved manner so that they, in eect, are a unitary structure. The ram occupies the full width of the guideway and is guided by the side walls 28, 29 thereof, and by the bottom wall 30.

Secured to the central members 23, are head-fashioning members or forming or die members 31, 32 and 33, respectively, each such member, in most instances, being cylindrical in shape and having a reduced inner end or shank 34 entered in its corresponding central member and fastened therein by aset screw 35, or otherwise. Part or all of these forming or dieV members, will, in some cases, be formed non-cylindrical, depending on the cross sectional formation the head of the article is to bev/hen finished. Each shank is fastened in place by a screw rod 36 entered into the die member from the rear and threaded axially into the shank, asy shown, said screw rod serving to retain the forming or die members in position with their shoulders 37 in rm contact against the front face of the ram, and more particularly the central members thereof.

The said forming or die members project forwardly into the guideway 22 varying distances, the upper or preliminary forming or die member having a long inwardly tapered axial bore 38 opening to the front. The secondary forming or die member 32 extends forwardly from theram a greater distance than the preliminary forming or die member 3l, and it is provided with a comparatively short inwardly tapering bore 39' of greater diameter, at least along the major portion of its length, than the tapering bore 38 in the preliminary forming or die member, and like the bore in the latter, opens to the front end of said secondary forming or die member.`

The finishing die member 33 terminates in a vertical plane which is normally between the planes of the outer ends of the two forming or die members 31 and and it is solid along its outer portion, and has its outer end face at a right angle to the axis thereof. This, however, may be varied, depending on the shape or contour the end surface of the head is to be in the nished article of manufacture.

When the ram is moved forwardly, the forming or die members, inciuding, of course, the finishing die member, are moved with it and during each forward movement of the ram, the three, die members are brought simultaneously into action against rods inserted into the machine from the front end thereoffthe preliminary forming or die member operating von aplane rod, preferably but not necessarily, heatedalong at least a' portion of that part of the rod inserted into the machine, the secondary die member operating uponthe rod afterhaving had a partly or preliminarily formed head or enlargement applied thereto by the preliminary forming or die member, and ther inishing die member actuating upon the rudimentarily formed head, so formed by the secondary forming or die member, said nishing die member completingthe head to true form in shape, diameter, and length.

vThe frame of the machine is cutaway along one of its walls 28, preferably along thefront of the latter, as at 4i), and in this cutaway-portion is iitted a guide slab'41,'the inner face of which is grooved, as at 42, to receive a slide bar 43 held in said groove by retainer bars 44 fastened to the inner side of the guide slab 41 and overlying 24 and 25 the marginal portions of the slide bar 43, the front end of which is rounded, as at 45, for a purpose to appear hereinafter. The rear end of said slide bar is laterally enlarged, as at 46, and provided with a stop 47 at its inner end against which the ram 21 is adapted to strike and cause forward movement of the slide bar 43, which is cushioned in its movement in a manner to appear hereinafter. The stop 47 determines the `exact extreme forward position of the ram and consequently the corresponding positions of the forming and finishing die members.

' At its front end the guide slab 41 is beveled, as at 48, `Figs. `5 and l1, and abutting against this beveled portion is the outer beveled edge 49 of the support or carrier 50 for the rod-supporting member, said support or carrier being arranged transversely in a recess 51 formed in the frame of the machine and being removable from said recess from the top of the machine, as clearly shown in Fig. 1.

The support or carrier 50 is provided with an opening 52 therethrough which extends from a point near the lower end thereof to the upper edge thereof, and it also has a horizontal opening 53 extending laterally from the opening 52.

The opening 53 terminates in a slot 54 into which the front end of the slide bar 43 extends and in which it is positioned for slight movement. The upper and lower walls of the opening 53 are notched, as at 55, 56, respectively, and in these notches, studs 57 extending from the upper and lower faces of an actuator 58 are positioned, said actuator 58 being positioned within the opening 52 and the studs 57 being disposed centrally between the ends of the actuator and serving as pivots on which the actuator is centered for swinging movement. The actuator is disposed at a right angle to the slide bar 43 and has one end provided with a rearwardly-facing rounded projection 59, which bears against the rounded front end of the slide bar 43, and the rear face of said actuator is grooved at its other end, as at 60, the groove being conoaved for engagement with another element of the machine, to be more particularly described hereinafter.

The support or carrier 50 is fastened to the guide slab 41 in any approved manner, and also to the frame 20 of the machine, and for this purpose has bolt holes 6l therein through which bolts 62 are passed, said bolts extending through the frame 'of the machine forward of the support or carrier 50,-passing through the bolt holes 61, one bolt entering member 63 of a pair of rod clamping members 63, 64, terminating within the support or carrier 50.

In the frame of the machine is a transverse guide opening 65, and in this opening is transversely slidable a ram 66 to which the rod clamping member 64 is secured. The rod clamping member 63 has a xed positionwithin the machine, and it also serves as a guide wall for the the slide bar 43, as clearly shown in Fig. 5. The rod clamping member 64 is therefore movable transversely within the front end of the guideway 22 and is adapted to be brought into contact with the xed rod clamping member 63, the op posing surfaces of these rod clamping members having semi-cylindrical grooves or cavities 67,

68 and 69, which, when the rod clamping members are ,brought together form cylindrical openings 70, 71, 72, respectively, as clearly shown in Fig. 5. Theaxes of these cylindrical openings are coincident with the axes of the die members 31, 32 and33. .l l

Each ofthe'semi-cylindrical groovesor cavities '67 hasan inner or rear portion 73, which is of a size to correspond with that off-'the rod-to be upset. and it valso has an enlarged outer ,orl front portion 74.,

Each or the semi-cylindrical grooves or 'cavities 6 8 has an enlarged inner or rear .portion 75 and Va smaller forward or outer portion 76, the latter being of a diameter vcorresponding to that of the rod operated upon; the Vlarge-innerer rear portion 'l5 Vbeing of a diameter to receive the forming or die member 32. By enlarging the. rear or inner portion of each of the'grooves or'cavities 68, rearwardly or inwardly-facing shoulders 77 are formed in the groove or cavity.

Each of the semi-cylindrical grooves for cavities 69 has a. forward or kouter 'portion 78, which is of a. diameter corresponding to that of the rod to he operated upon, and a larger inner or rear portion 7S forming `rearwardly or inwardly-facing shoulders 80 in the 'grooves or cavities` The rear portions 79 vof the grooves or cavities correspond in size with the iinishing die 33,` which they are adapted to receive.

Set into each of the rod-clamping lmembers 63 and 64 is a nicking or marking element 8l in the form of a flat comparatively thin steel slab vvset into recesses 82 formed in the rod-clamping members and opening to the opposing faces thereof, said nicking or marking elements being held within said rod-clamping members by means of screws 83 threaded into registering semi-cylindrical screw threaded grooves formed in said elements and the walls of the recesses 'into which said elements are inserted. The inner edges of these nicking or marking elements conform to the opposing grooved surfaces of the rod-clamping members and eachedge is therefore provided with a semi-cylindricalnotch 84, the wall of which has a V-shaped rib 85 extending outwardlyV therefrom to form a cutting or nicking edge.

The straight portion 8.6 of the inner edge of each of these nicking or marking elements is hush with the inner face of Ythe rod-clamping member in which the element is inserted, and the semi-cylindrical notch has its wall fiushwith the wall of the small portion of the semi-cylindrical groove 67. The smaller vportion -of the semi-cylindrical grooves 67, 68 and 69 are adapted to clamp the rods operated-.upon and hold them securely againstlengthwise movement during the upsetting and finishing steps applied to the rods.

The inner surface of the support or .carrieris recessed, as at 87, and in this recess, which extends from the bottom the top of the support or carrier 50, is a rod-supporting member 88, the construction of whichk is clearly shown in Figs. 14 and 15. One vertical or upright edgel of this rod-.supporting member is straight lined, and its upper and lower edges are positioned flush with the upper and lower edges of the support or carrier 50. The other vertical or upright` edge of said rod-supporting member is of irregular formation, as it is notched, as at 89, 90 and 91 to provide horizontal ledges or shelves,rtheinotch 91 being offset with respect to the notches 89 and 90, which latter two are vertically alined. Arranged in horizontal alinement with the notch 91 is a plunger or stud opening 92 which is also in vertical alinement with the inner ends-of the notches 89 and 90, both of which latter are rounded at their inner ends to approximate `the cylindrical formation of the rods to be operated upon. When rods of other kcross-sectional formation are being upset, the rod-supporting memrod-opening V92 are, respectively, alined with the semi-cylindrical grooves 67, l68 and 69,in the opposing faces of the rod-clamping members 63 and vdei. and their axes; and therefore, considering' only the rounded'inner kends of the notches 89 and 90, they are'coincident with, the-rod openings formed :by said semi-cylindrical grooves when Athe :two `rod-clamping members are brought together.

1 The rod-supporting member 88 is provided with Va recess 95 in its inner face Lextending along the irregular vertical or upright vedge of said member, vand in this recess is fastened a shearing member 96, the outer edge of which conforms to the edge of therod-supporting memberV along the region of said recess. This shearing member, therefore, also has a notch 97 extending inwardly from its outer edge which registers with the notch 491 in therod-supporting member. It further has a plunger or stud opening 98 which is in registration with the plunger or stud opening 92 in the rod-supporting membern 88, `and it is fastened to said member by bolts 99passed through 4bolt holes 100, saidlbolts being threaded into screw-threaded openings 101 in said shear/- ing member. f

The plunger opening 98 in the shearing member is slightly smaller than the plunger opening 92 in the rod-supporting member, but their axes are coincident, and in these openings is arranged a. short squaring plunger or stud 102 provided with a head 103 having a convex outer surface conforming to and adapted to bear against the concaved inner wall of the groove 60 in the p ivoted actuator 58. This plunger is reduced in diameter at its inner end to conform to the diameter of the plunger' opening 98 in the shearing member-96, thus Vproviding an inwardly-facing shoulder 104 which serves to klimit the inward movement of ,said plunger or stop. Y

o Surrounding the enlarged portion of said plunger or stud 102 so as to :fit into the plunger opening 92 in the supporting member and bear at one end'against the outer surface of the shearing member and at its other endagainst the head of said plunger is a helical spring 105 which serves to retain the plunger in its outermost position and cause the pivoted actuator 58 to swing on the short studs 57. Thisspring, through the medium of the plunger or stud 102 and the actuator 58, also cushions the movement of the slide bar 43. A definite stop is provided for the outward movement of the outer end of the pivoted actuator, or the inward movement of the inner end of said actuator, and this stop is in the form of an adjustable bolt 106 threadedinto a bracket 107 secured to the bed i108 of'the machine frame `20. Y The stud 102 and actuating parts. associated4 therewith form what I term end-nishing means.l Y g.

It may here be statedv that'medially the.v plv-` oted Yactuator, is transversely enlarged-pand' the outer and inner edgesthereof rounded, and these edges bear, respectively, against the inner face of the machine frame and the inner wall 109 of a notch 110 formed inthe outer face of the rodsupporting member 88. The inner face of the portion of the machine frame 20, Vwhich covers a portion of the support or carrier andthe inner portion of the pivoted actuator, has a hardened insert .1-11 set into it against which the rounded outer edge at the widenedmedial portion of the pivoted actuator bears. e

As shown in Fig. 8, a rod, having at least `a portion of its length well heated, is inserted into the machine through the notch 89 of the rodsupporting member and entered in the semi-circular groove 67 of the xed rod-clamping member 63, the rod being sov positioned that it eX- tends rearwardly beyond said xed rod-clamping member to a predetermined point, depending on the amount oflmetal in the 'rod to be operated upon to form the enlargement or head designed for the same; the exact degree of extension of the rod beyond said xed clamping member being shown in dotted linesin Fig. 8 and being determined in any suitable manner.

By suitable meansprovided in the machine (not shown), the movable rod-clamping member 64 is brought inl contact with the iixed rod-clampingfmember 63 through the actuation of the transversely movable ram 66, and thus the rod is firmly clamped between the two clamping members against movement lengthwise, and at the same time the nickers or markers 81 nick or mark the rod at the point'where itis finally to be completely severed. The longitudinally movable ram 21 is then actuated by any ysuitable meansjsuch as a machine of this general type is provided with, and by reason of the die mem# bers 31, 32 and 33 being secured to said ram, they are carried forwardly, with the vresult that the uppermost forming or die member 31 receives the projecting end of the rod, whichnormally is somewhat longer than the axial bore in said forming or die member, and said projecting portion is condensed lengthwise'and expanded radially so that it will assume the exact yshape of the bore 38, as clearly shown in Fig. 8; or in other words, so that a long tapered preiiminarily formed head is' provided on the rod. In most instances it may be found desirable to heat the portion of the rod'to be upset/prior to placing the rod in the machine. After this preliminary operation, the ram 21 is moved rearwardly and `the ram 66 outwardly so as toV enable the rod to be lowered into the next notch 90 in the' rod-sup-v porting member and into the semi-cylindrical groove 68 in the fixed rod-clamping member. At the same time the operator will insert a cold or a heated rod into the uppermost groove 67 of the xed rod-clamping member to be operated upon toV form the long taperedV head, in themanner already described. The rod previously acted upon and having the long v taperedhead formed thereon will'have the inner end of .said head bearing against' the' shoulder 77 in the semicylin drical groove 68 of the fixed clamping member. With the rods thus positioned, the transversely movable ram is again moved inwardly to clamp both rods,`after which the ram 2l is moved forwardly and the forming 'or 'die member 31 will act upon' the. rod held'between -theuppermost grooves 67, while the forming orV die member 32 will enter theenlarged portions ofthe semi'cyl' indrical grooves 68'and actupon the long tapered preliminarilyformedhead positioned within said grooves. The `inwardly-tapering bore 39 in' said forming or die member 32 .being somewhat larger in diameter and shorter than the preliminarily formed tapered head results in the metal in said head being condensed inthelengthlof the head and radially enlargedso that the lhead on the rod will be rudimentarily formed to the exact shape of the inwardly-tapering bore-39, as clearly shown iniFig. 9.: After both rods are operated upon they are lowered, the rod having the preliminarily formed head being lowered to the second notch in the rod-supporting member while the rod having the rudimentarily formed head thereon is lowered into the notch 91 of said rodsupporting member. This leaves the uppermost notch 89 in the rod-supporting member and the uppermost semi-cylindrical groove 67 in the xed rod-clamping member vacant to receive arod which has notv previously been operated upon. The'rods positioned uppermost and intermediate-V ly areacted upon in the manner already dee scribed, while the lowermost rod having the rudimentarily-formed head thereon will be positioned with the inner end of said head against the shoulder insaid groove. During the operation of bringingthe rod-clamping members together, the lowermos't rodwill become severed where it had been'previously marked orfnicke'd, this being due to the fact that the shearing member96 will coact with the movable rod-clamping member, which latter will move past the notched shearingedg'e of the shearing member and cut the rod to the length desired for the finished article. After severing the rod, the kpart extending out# wardly from the machine is returned to a furnace or other heatingapparatus, to be re--heated and operated upon, as already described.

When the rod clamping members are brought together after shearing the lowermost rod, the rudimentarily 'formed head will be positioned against' the shoulders 80 in the two die clamping m mbers, and the finishing or die member 33 v l beontered in the enlarged portion of the opening 72 between said rod-clamping members iormedby 'the grooves 69, with the result that the headvwill be condensed in length and eX- panded orenlarged radially to ytrue cylindrical form, as cleariyshown in Fig. 11;. or to any other form which said opening may have.

During the` act of iinishinglthe head, the pivoted actuator 58 will be operated, due to the fact that the slide bar 43 will be forced forwardly by the ram25, said ram' engaging thestock 47 secured to the rearv end of said slide'. This results in the pivoted actuator forcing the stud or plunger 1021 inwardly against'the end of the sheared-oi portion of the rod retained ibetween the clamping members, and 'as the stud or plunger is of asize to snugly enter the opening in the clamping members formed by thecavities y69, it will form aneven end face without the usual projecting fin at one corner and beveled or rounded corner directlyopposite; it will also act to square the outer end of the headed article and -nnishthe same to true form.

vIt isalso to b'e noted that by reason of the use of the spring 105 around `the stud or plunger 102, the action of all parts is cushioned. yThe said spring'also serves to return the pivotedactuator and the slide bar with'it's stop 47 to normal position.

Where, in the yclaims, the term to square the afi even end face for the `same at atrue right angle to the axis of the article.` Y`

2. A machine for upsettingl rods tofo'rm heads thereon, comprising means for 'forming' a head on a-rod, means to sever the 'rod to form a-headed article of the desired length, and end-linishing means to exert pressure against' the-severed end of the article brought into actien by the means employed for forming the head on said rod, said end-nishing meansforming an even end face for the article without an overhanging nn -or a beveled or rounded-corner.

3. A- machine for upsetting rods to form heads thereon, comprising' a ram, forming elements secured to the ram 'to forma head on a rod, a pivoted actuator, means for `severing the rod at the desired distance from the head, anda plunger actuated by said pivoted actuator forced against the severed end of the article to nnish the saine true and at at right angles' to the axis of the rod,

4.- In a machine for upsetting rods to form heads thereon, means 'or clamping a rod, means to form a head on the inner end of said rod, shearing mechanism for severing therod to form a headed article, and means brought into action by said head-forming means acting against the severed end of the headed` articl'e to nishfsaid severed end to true form-andat an angle tothe airis of the' rod. l I

5. Ina machine for upsetting rods to form heads thereon, meansfr clamping a rod, means to form a head on the inner end of said rod, shearing mechanism for severing the rod to form a headed article, and means acting against the severed end of the headed article and adapted to slightly enter said clamping means to finish the severed end of the headed article to true form and at an angle to the axis thereof, said clamping means determining the true diameter of said severed end under action or" said lastmentioned means.

6. In a machine for upsetting rods to form heads thereo-n, clamping members relatively movable to clamp a rod therebetween, shearing mechanism adjacent said clamping members to i shear a rod to predetermined length., said shearing mechanism including a shearing blade having an opening therethrough, a rod supporting member to which said shearing blade is secured provided with an opening co-aXial with the opening in said shearing blade and of larger diameter, a plunger within said openings having a head thereon, a spring surrounding said 'plunger and bearing at one end against said head and at its other1 end against said shearing blade, a pivoted member normally bearing against said plunger, and means for actuating said pivoted member to actuate said plunger when the rod is clamped between said clamping members and I otherwise operated upon.

7. In a machine for upsetting rods to form heads thereon, clamping members relatively movable to clamp a rod therebetween, a forming element adapted to act upon the inner end of a rod clamped between said clamping members, a ram to which said forming element is secured movable toward said clamping members to bring said forming element into action against the inner end of said rod, movable means extending from a point within the path of said ram forwardly to and around the front end of said clamping members including a stud adapted to act against the front end of said rod to complete the same to nished form.

8. In a machine for upsetting rods to form enlargements thereon, clamping members relal tively movable to clamp a rod therebetween so as vto have free end portions, means for shearing said rod upon clamping the same s'o that the outer 'end of the rod clamped will have at least a portion thereof flush 'with the outer ends of 'said clamping members, a forming 'element adapted' lto act upon the inner' end of saidro'd, 'aram tol wliich'said for-ming element is secured movable toward said clamping members to bring said forming element into action against thel inner end "of said rod, a stud maintained normally inline with said rod at the outer 'end thereof, Yand ineansactuated by said ram to operate said stud and force the same against the outer end of said rod and between said clamping members.

9. A machine for upsetting rods to' form enlargements thereon, comprising clamping meinbers having registering grooves adapted to rec'eive and'cl'amp a rod along a region between its ends' when 'said clamping 'members are brought together so that free portionsk of the rodare provided at the inner and outer ends of vthe clamped region, a 'movable element normally spaced from the innerends of said clamping members:movabletoward the same, a forming' element secured to said `movable element adapted to act upon the inner free end of said rod when clamped between said clamping members.' means to sever said rod at the front end of its clamped region in line with the outer ends of said 'clampingy members, and means to square the outer end of said rod while said forming element passes through at least a portion of its movenient, said means being actuated by saidcmovable element 10. A machine for upsetting rods to form heads thereon, comprising a frame, a clamping member arranged in xed relation within said frame, a clamping member movable toward and from said first-mentioned clamping member to clamp a rod between the two along a region between its ends to expose free portions of the rod at its inner end and outwardly from the clamped region thereof, a ram normally spaced from the inner ends of said clamping members and movable toward the same, a forming element carried by said ram and adapted to act upon the inner end of said rod, a slide bar disposedv between said xed clamping member and said frame and having a portion extending into the space between said ram and said clamping members, a pivoted actuator disposed at right angles, to said slide bar and engaged at one end by the latter, said actuator being pivotally mounted between its ends, means for shearing the rod in line with the front ends of said clamping members, a stud spring-pressed outwardly away from the sheared end of said rod and maintained against the other end of said actuator, said slide bar being adapted to be actuated by said ram during the nal portion of its outward movement and cause actuation of said actuator to force said stud against the sheared end of said rod to square the same between said clamping members in close proximity to the outer ends of the latter.

l1. A machine for upsetting rods to form enlargements thereon, comprising means to clamp a rod with free portions at its inner end and outwardly from said means, movable means to engage the free inner end of lsaid rod to form the same to desired shape, means for shearing said rod at the outer end of said clamping means, an element conforming to the cross sectional formation and transverse dimension of said rod normally positioned in slightly spaced relation to the sheared end of said rod, and means actuated during the formation of the inner end of said rod for actuating said element.

12. In a machine for upsetting rods-to form heads thereon, clamping members relatively movable and provided with depressions in opposed faces to receive and clamp a rod with its inner end free to be operated upon, the outer end of said rod being in line with or slightly within said depressions, means adapted to enter said depressions at the outer ends of said clamping members to square the outer end of said rod Within said depressions, and means for actuating said last-mentioned means from a movable part of said machine. y Y

13. In a machine for upsetting rods to form enlargements thereon,k two clamping members relatively movable to clamp a rod therebetween, means for shearing the rod at the front end of said clamping members, a stud normally slightly spaced from the outer ends-of said clamping members and so spring retained, a support for Vj said stud, an actuator pivoted between its ends within said support and disposed at an angle to said stud, one end of said actuator having the outer end of said stud bearing thereagainst, and means for actuating said actuator from the opposite end thereof.

14. yA machine for upsetting rods to form heads thereon, comprising a ram, forming elementsv secured to the ram to form a, head on a rod, means for severing the rod at the desired distance from the head to form a headed article, an actuator, and a plunger actuated by said actuator and forced against the severed end of the article to finish the severed end face thereof smooth rand even Without a fin or a beveled or rounded corner.

15. A machine for upsetting rods to form heads thereon, comprising means to clamp a rod, means to exert pressure against one end thereof to form the head thereon, a plunger to engage the opposite end of the rod While retained in said clamping means, and means to exert pressure against said plunger to provide a smooth end face for said last-mentioned end of the rod Without a projecting n or a beveled or rounded corner.

16. A machine for upsetting rods to form heads thereon, comprising means to clamp a rod, forming elements to form a head onone end of said rod While clamped within said clamping means, means for severing the rod at the desired distance from the head to form a headed article, a plunger adapted to engage the severed end of said headed article and compress the same at the severed end slightly within said clamping means, and means for actuating said plunger to iinish the severed end of the article to true form and to assure exact lengthhof the finished article. Y

KARL F. W. KEMIF. 

